It's time to clean your washing machine! Even if it's not visibly dirty and grungy, this will help clean soap scum and mineral deposits in the pipes and hoses. You just need vinegar, bleach, and two wash cycles!
Instead of wearing yourself out by scrubbing, simply fill a bowl (one that is microwave safe) with 1 to 2 cups of water, 2 tablespoons of white vinegar and a few drops of your favorite essential oil. Place the bowl in the microwave and run for 5 minutes. If you have a really messy microwave, leave it sitting in there for a few extra minutes after the timer goes off. Then just wipe clean with a damp towel.